ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Numerical study of DBD vortex generator and application in junction flow control
Received date: 2015-10-21
Revised date: 2016-01-05
Online published: 2016-01-11
Supported by
National Natural Science Foundation of China (11372027)
In order to explore the effects of dielectric barrier discharges (DBD) vortex generator on the horseshoe vortex, the phenomenological model is applied in the paper to the numerical simulation. The characteristics of the streamwise vortex structure and its control on the horseshoe vortex are analyzed. The results indicate that the tornado-like vortex is formed at the edge of the upstream electrode, and streamwise vortex engulfs the free shear layer and gains continuous vortices. When the induced flows on the two sides of symmetry plane point to the symmetry and the direction of the induced vortex is opposite to the horseshoe vortex, the strength of horseshoe vortex can be suppressed effectively in junction flow at the root of the cylinder. Otherwise the control effect is poor. Three factors, the viscous diffusion of the induced vortex on horseshoe vortex, and the mixing and low pressure of the induced vortex, related to the control mechanism are pointed out.
XU Xiangnan , ZHANG Hua , HU Bo . Numerical study of DBD vortex generator and application in junction flow control[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(6) : 1743 -1752 . DOI: 10.7527/S1000-6893.2016.0006
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